*/*: update for slotted Rust

guru version of this commit:
https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=01ba4dc61965ef7658a24728841c04c9a1ce4871

Closes: https://bugs.gentoo.org/943170
Closes: https://bugs.gentoo.org/943223
Closes: #260
Signed-off-by: Takuya Wakazono <pastalian46@gmail.com>

dev-libs/dmd_core/dmd_core-0.7.2-r1.ebuild

@@ -55,16 +55,8 @@ KEYWORDS="~amd64"
 
 RESTRICT="test"
 
-# There are inconsistencies in the minimum required version between
-# the homepage of the package and the README of its primary consumer,
-# developed by the same person. Since the primary consumer directly
-# pulls up the library as a Git submodule (patched out to use a
-# standalone library in Gentoo) and does not require Rust by itself,
-# we presume that that is more accurate.
-BDEPEND=">=virtual/rust-1.50.0"
-
 src_install() {
-	dolib.a target/$(usex debug debug release)/lib${PN}.a
+	dolib.a "$(cargo_target_dir)"/lib${PN}.a
 	insinto /usr/$(get_libdir)/pkgconfig
 	doins "${FILESDIR}"/dmd_core.pc
 	sed -e "s/%VERSION%/${PV}/g" \

dev-libs/libsignal-ffi/libsignal-ffi-0.44.0-r1.ebuild

@@ -6,8 +6,9 @@
 EAPI=8
 
 LLVM_COMPAT=( {18..19} )
+RUST_NEEDS_LLVM=1
 
-inherit cargo llvm-r1
+inherit llvm-r1 cargo
 
 DESCRIPTION="A C ABI library which exposes Signal protocol logic"
 HOMEPAGE="https://github.com/signalapp/libsignal"
@@ -28,6 +29,11 @@ BDEPEND="
 	$(llvm_gen_dep 'sys-devel/clang:${LLVM_SLOT}')
 "
 
+pkg_setup() {
+	llvm-r1_pkg_setup
+	rust_pkg_setup
+}
+
 src_unpack() {
 	default
 	cargo_gen_config

dev-libs/libsignal-ffi/libsignal-ffi-0.46.0-r1.ebuild

@@ -6,8 +6,9 @@
 EAPI=8
 
 LLVM_COMPAT=( {18..19} )
+RUST_NEEDS_LLVM=1
 
-inherit cargo llvm-r1
+inherit llvm-r1 cargo
 
 DESCRIPTION="A C ABI library which exposes Signal protocol logic"
 HOMEPAGE="https://github.com/signalapp/libsignal"
@@ -28,6 +29,11 @@ BDEPEND="
 	$(llvm_gen_dep 'sys-devel/clang:${LLVM_SLOT}')
 "
 
+pkg_setup() {
+	llvm-r1_pkg_setup
+	rust_pkg_setup
+}
+
 src_unpack() {
 	default
 	cargo_gen_config

dev-libs/libsignal-ffi/libsignal-ffi-0.51.0-r1.ebuild

@@ -6,8 +6,9 @@
 EAPI=8
 
 LLVM_COMPAT=( {18..19} )
+RUST_NEEDS_LLVM=1
 
-inherit cargo llvm-r1
+inherit llvm-r1 cargo
 
 DESCRIPTION="A C ABI library which exposes Signal protocol logic"
 HOMEPAGE="https://github.com/signalapp/libsignal"
@@ -28,6 +29,11 @@ BDEPEND="
 	$(llvm_gen_dep 'sys-devel/clang:${LLVM_SLOT}')
 "
 
+pkg_setup() {
+	llvm-r1_pkg_setup
+	rust_pkg_setup
+}
+
 src_unpack() {
 	default
 	cargo_gen_config

dev-libs/tbtools/tbtools-0.3.2-r2.ebuild

@@ -132,6 +132,11 @@ declare -A GIT_CRATES=(
 	[cursive_core]='https://github.com/gyscos/cursive;0a95c82c88c8a791d7fd983e7fb9f568b77551a8;cursive-%commit%/cursive-core'
 )
 
+# <time@0.3.35
+# https://github.com/time-rs/time/issues/693
+RUST_MAX_VER="1.79.0"
+RUST_MIN_VER="1.74.0"
+
 inherit cargo
 
 DESCRIPTION="Thunderbolt/USB4 debugging tools"
@@ -151,7 +156,6 @@ RDEPEND="virtual/libudev"
 DEPEND="${RDEPEND}"
 BDEPEND="
 	virtual/pkgconfig
-	>=virtual/rust-1.74.0
 "
 
 QA_FLAGS_IGNORED="usr/bin/.*"